<template>
  <div class="containers" ref="content">
    <div class="canvas" ref="canvas"></div>
    <div id="js-properties-panel" class="panel"></div>
  </div>
</template>

<script>
// 引入相关的依赖
//import { xmlStr } from '../../../mock/xmlStr'
import BpmnModeler from "bpmn-js/lib/Modeler";
import propertiesPanelModule from "bpmn-js-properties-panel/lib/PropertiesPanel";
import propertiesProviderModule from "bpmn-js-properties-panel/lib/provider/camunda";
import camundaModdleDescriptor from "camunda-bpmn-moddle/resources/camunda";

export default {
  name: "",
  components: {},
  // 生命周期 - 创建完成（可以访问当前this实例）
  created() {},
  // 生命周期 - 载入后, Vue 实例挂载到实际的 DOM 操作完成，一般在该过程进行 Ajax 交互
  mounted() {
    this.init();
  },
  data() {
    return {
      // bpmn建模器
      bpmnModeler: null,
      container: null,
      canvas: null,
    };
  },
  // 方法集合
  methods: {
    init() {
      // 获取到属性ref为“content”的dom节点
      this.container = this.$refs.content;
      // 获取到属性ref为“canvas”的dom节点
      const canvas = this.$refs.canvas;

      // 建模
      this.bpmnModeler = new BpmnModeler({
        container: canvas,
        propertiesPanel: {
          parent: "#js-properties-panel",
        },
        additionalModules: [
          //左侧工具栏以及节点
          propertiesProviderModule,
          propertiesPanelModule,
        ],
        moddleExtensions: {
          camunda: camundaModdleDescriptor,
        },
      });
      this.createNewDiagram();
    },
    createNewDiagram() {
      const bpmnXmlStr =
        '<?xml version="1.0" encoding="UTF-8"?>\n' +
        '<bpmn:definitions xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:bpmn="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:dc="http://www.omg.org/spec/DD/20100524/DC" xmlns:di="http://www.omg.org/spec/DD/20100524/DI" id="Definitions_0fppxr8" targetNamespace="http://bpmn.io/schema/bpmn">\n' +
        '  <bpmn:process id="Process_1" isExecutable="false">\n' +
        '    <bpmn:startEvent id="StartEvent_1" name="begin&#10;">\n' +
        "      <bpmn:outgoing>SequenceFlow_0nrfbee</bpmn:outgoing>\n" +
        "    </bpmn:startEvent>\n" +
        '    <bpmn:task id="Task_0ho18x0" name="hello&#10;">\n' +
        "      <bpmn:incoming>SequenceFlow_0nrfbee</bpmn:incoming>\n" +
        "      <bpmn:outgoing>SequenceFlow_00ho26x</bpmn:outgoing>\n" +
        "    </bpmn:task>\n" +
        '    <bpmn:task id="Task_1ymuvem" name="world">\n' +
        "      <bpmn:incoming>SequenceFlow_00ho26x</bpmn:incoming>\n" +
        "      <bpmn:outgoing>SequenceFlow_18df8vb</bpmn:outgoing>\n" +
        "    </bpmn:task>\n" +
        '    <bpmn:endEvent id="EndEvent_1c0ed2n" name="end">\n' +
        "      <bpmn:incoming>SequenceFlow_18df8vb</bpmn:incoming>\n" +
        "    </bpmn:endEvent>\n" +
        '    <bpmn:sequenceFlow id="SequenceFlow_0nrfbee" sourceRef="StartEvent_1" targetRef="Task_0ho18x0" />\n' +
        '    <bpmn:sequenceFlow id="SequenceFlow_00ho26x" sourceRef="Task_0ho18x0" targetRef="Task_1ymuvem" />\n' +
        '    <bpmn:sequenceFlow id="SequenceFlow_18df8vb" sourceRef="Task_1ymuvem" targetRef="EndEvent_1c0ed2n" />\n' +
        "  </bpmn:process>\n" +
        '  <bpmndi:BPMNDiagram id="BPMNDiagram_1">\n' +
        '    <bpmndi:BPMNPlane id="BPMNPlane_1" bpmnElement="Process_1">\n' +
        '      <bpmndi:BPMNShape id="_BPMNShape_StartEvent_2" bpmnElement="StartEvent_1">\n' +
        '        <dc:Bounds x="173" y="102" width="36" height="36" />\n' +
        "        <bpmndi:BPMNLabel>\n" +
        '          <dc:Bounds x="178" y="145" width="27" height="27" />\n' +
        "        </bpmndi:BPMNLabel>\n" +
        "      </bpmndi:BPMNShape>\n" +
        '      <bpmndi:BPMNShape id="Task_0ho18x0_di" bpmnElement="Task_0ho18x0">\n' +
        '        <dc:Bounds x="485" y="244" width="100" height="80" />\n' +
        "      </bpmndi:BPMNShape>\n" +
        '      <bpmndi:BPMNShape id="Task_1ymuvem_di" bpmnElement="Task_1ymuvem">\n' +
        '        <dc:Bounds x="712" y="391" width="100" height="80" />\n' +
        "      </bpmndi:BPMNShape>\n" +
        '      <bpmndi:BPMNShape id="EndEvent_1c0ed2n_di" bpmnElement="EndEvent_1c0ed2n">\n' +
        '        <dc:Bounds x="1056" y="568" width="36" height="36" />\n' +
        "        <bpmndi:BPMNLabel>\n" +
        '          <dc:Bounds x="1065" y="611" width="19" height="14" />\n' +
        "        </bpmndi:BPMNLabel>\n" +
        "      </bpmndi:BPMNShape>\n" +
        '      <bpmndi:BPMNEdge id="SequenceFlow_0nrfbee_di" bpmnElement="SequenceFlow_0nrfbee">\n' +
        '        <di:waypoint x="209" y="120" />\n' +
        '        <di:waypoint x="347" y="120" />\n' +
        '        <di:waypoint x="347" y="284" />\n' +
        '        <di:waypoint x="485" y="284" />\n' +
        "      </bpmndi:BPMNEdge>\n" +
        '      <bpmndi:BPMNEdge id="SequenceFlow_00ho26x_di" bpmnElement="SequenceFlow_00ho26x">\n' +
        '        <di:waypoint x="585" y="284" />\n' +
        '        <di:waypoint x="649" y="284" />\n' +
        '        <di:waypoint x="649" y="431" />\n' +
        '        <di:waypoint x="712" y="431" />\n' +
        "      </bpmndi:BPMNEdge>\n" +
        '      <bpmndi:BPMNEdge id="SequenceFlow_18df8vb_di" bpmnElement="SequenceFlow_18df8vb">\n' +
        '        <di:waypoint x="812" y="431" />\n' +
        '        <di:waypoint x="934" y="431" />\n' +
        '        <di:waypoint x="934" y="586" />\n' +
        '        <di:waypoint x="1056" y="586" />\n' +
        "      </bpmndi:BPMNEdge>\n" +
        "    </bpmndi:BPMNPlane>\n" +
        "  </bpmndi:BPMNDiagram>\n" +
        "</bpmn:definitions>\n";
      // 将字符串转换成图显示出来
      this.bpmnModeler.importXML(bpmnXmlStr, (err, success) => {
        if (err) {
          console.error(err);
        } else {
          // 这里是成功之后的回调, 可以在这里做一系列事情
          this.success();
          console.log(success);
        }
      });
    },
    success() {
      // console.log('创建成功!')
    },
  },
  // 计算属性
  computed: {},
};
</script>

<style scoped>
.containers {
  background-color: #ffffff;
  width: 100%;
  height: calc(100vh - 52px);
}
.canvas {
  width: 100%;
  height: 100%;
}
.panel {
  position: absolute;
  right: 0;
  top: 0;
  width: 300px;
}
</style>
